//
//  AppDelegate.swift
//  CLWeibo
//
//  Created by 陈亮 on 16/7/9.
//  Copyright © 2016年 陈亮. All rights reserved.
//

import UIKit

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

    var window: UIWindow?

    //返回观察者对象
    var observer :NSObjectProtocol?

    func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
        
        observer = NSNotificationCenter.defaultCenter().addObserverForName(SwitchRootVCNotification, object: nil, queue: nil) {[weak self] (noti) -> Void in
           
            self?.switchRootVC(noti)
            
        }
        
        
        self.window = UIWindow(frame:UIScreen .mainScreen().bounds)
        
        //创建tabbar控制器
        let clTabBarVC = CLMainTabBarController()
        //设置跟控制器
        window?.rootViewController = clTabBarVC
        //设置控制器可见
        window?.makeKeyAndVisible()
        
        
        return true
    }

    
    @objc private func switchRootVC (noti :NSNotification){
        let object = noti.object
        if object is CLOAuthViewController {
            
            window?.rootViewController = CLWelcomeViewController()
        }else {
            window?.rootViewController = CLMainTabBarController()
        }
    }
    func applicationWillResignActive(application: UIApplication) {
        // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
        // Use this method to pause ongoing tasks, disable timers, and throttle down OpenGL ES frame rates. Games should use this method to pause the game.
    }

    func applicationDidEnterBackground(application: UIApplication) {
        //在后台的时候执行缓存清除函数
        CLStatusDAL.clearCacheData()
    }

    func applicationWillEnterForeground(application: UIApplication) {
        // Called as part of the transition from the background to the inactive state; here you can undo many of the changes made on entering the background.
    }

    func applicationDidBecomeActive(application: UIApplication) {
        // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
    }

    func applicationWillTerminate(application: UIApplication) {
        // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
    }

    deinit{
        NSNotificationCenter.defaultCenter().removeObserver(observer!)
    }

}

